SLIPPERY ROCK — The 10th annual Kaleidoscope Arts Festival runs April 13 to 23 at Slippery Rock University.

The popular Children's Day is April 16. Featured events include the Missoula Children's Theatre's “Alice in Wonderland” and East Meets West by Visual Expressions, a collection of vignettes presented with puppets by artist Hua Hua Zhang.

Most events are free or at minimal cost. Call 724-738-4586 for information.

Bach Choir of Pittsburgh presents “The Passion according to St. John” by Johann Sebastian Bach to close out the season. The choir performs at 8 p.m. April 30 and at 4 p.m. May 1 at PPG Wintergarden, 200 Three PPG Place.The group will be joined by the Academy Chamber Orchestra and soloists. Tickets range from $12 to $30. Call 412-394-3353; visit www.proartstickets.org.

LIGONIER — Fort Ligonier, which opens the season April 15, this year commemorates the 250th anniversary of the Coronation of King George III.The calendar includes:n Detachment of the 60th Regiment — Royal Americans, May 14 and 15 and Sept. 3 and 4n “George Washington Returns” (Community Day), June 12n “Battles of the French and Indian War,” July 23 and 24.n Fort Ligonier Days, Oct. 15 and 16.Fort Ligonier's hours are 10 a.m. to 4:30 p.m. Mondays through Saturdays and noon to 4:30 p.m. Sundays. Admission is $8 for adults, $5 for children ages 6 to 14, and free for children 5 and younger.For more information, call 724-238-9701.

PITTSBURGH — Carnegie Museum of Art presents “Hand Made: Contemporary Craft in Ceramic, Glass, and Wood” opening Friday in the newly renovated balcony gallery.Formerly known as the Treasure Room, this exhibition space showcases the museum's collection of decorative arts objects, with an emphasis on modernist and contemporary design and craft.Hours for the Carnegie, at 4400 Forbes Ave., are 10 a.m. to 5 p.m. Tuesdays through Saturdays, with additional hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays.Admission is $15 for adults, $12 for senior citizens age 65 and older, and $11 for students with ID and children age 3 to 18, and free for members and children younger than 3.Call 412-622-3131 or visit the website, www.cmoa.org.

PITTSBURGH — Harpist Heidi Van Hoesen Gorton performs at 5:30 p.m. April 17 in the Alumni Concert Hall at Carnegie Mellon University, 5000 Forbes Ave. The concert is sponsored by the Pittsburgh chapter of the American Harp Society.Tickets can be purchased at the door at $15 for adults and $10 for seniors and students with a valid student ID.

PITTSBURGH — The musical “Mamma Mia!” based on the songs of Abba returns to Heinz Hall, 600 Penn Ave., for a run from April 19 to 24.Tickets range from $27 to $67 and are available by calling 412-392-4900 or online at www.pgharts.org.

PITTSBURGH — Robert Morris University's Colonial Theatre presents “The Crucible” at the New Hazlett Theater, 6 Allegheny Square East. Times are 8 p.m. today through Saturday and at 2 p.m. Sunday.Tickets are $10 and are available at the door or by calling 412-397-5408 or at www.rmu.edu/theatre.

MONROEVILLE — The Pittsburgh Comicon takes place April 15 to 17 at the Monroeville Convention Center, 209 Mall Blvd.The event will have comic books, movies, toys and games. Hours are 1 to 7 p.m. April 15, 10 a.m. to 6 p.m. April 16 and 10 a.m. to 5 p.m. April 17.Tickets are $18 for a one-day pass, $35 for a two-day pass and $45 for a three-day pass; those younger than 8 are admitted free with a paid adult.